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From: Andrew Morton <akpm@linux-foundation.org>
To: Roman Zippel <zippel@linux-m68k.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>,
Alon Bar-Lev <alon.barlev@gmail.com>,
linux-kernel@vger.kernel.org, bwalle@suse.de,
rmk+lkml@arm.linux.org.uk, spyro@f2s.com,
davej@codemonkey.org.uk, hpa@zytor.com, Riley@williams.name,
tony.luck@intel.com, geert@linux-m68k.org, ralf@linux-mips.org,
matthew@wil.cx, grundler@parisc-linux.org, kyle@parisc-linux.org,
paulus@samba.org, schwidefsky@de.ibm.com, lethal@linux-sh.org,
davem@davemloft.net, uclinux-v850@lsi.nec.co.jp, ak@muc.de,
vojtech@suse.cz, chris@zankel.net, len.brown@intel.com,
lenb@kernel.org, herbert@gondor.apana.org.au,
viro@zeniv.linux.org.uk, bzolnier@gmail.com,
dmitry.torokhov@gmail.com, dtor@mail.ru, jgarzik@pobox.com,
linux-mm@kvack.org, dwmw2@infradead.org, patrick@tykepenguin.com,
kuznet@ms2.inr.ac.ru, pekkas@netcore.fi, jmorris@namei.org,
philb@gnu.org, tim@cyberelk.net, andrea@suse.de,
ambx1@neo.rr.com, James.Bottomley@steeleye.com,
linux-serial@vger.kernel.org
Subject: Re: [PATCH 00/34] __initdata cleanup
Date: Fri, 9 Feb 2007 13:33:55 -0800 [thread overview]
Message-ID: <20070209133355.d5df1ab5.akpm@linux-foundation.org> (raw)
In-Reply-To: <Pine.LNX.4.64.0702091831150.14457@scrub.home>
On Fri, 9 Feb 2007 18:37:34 +0100 (CET)
Roman Zippel <zippel@linux-m68k.org> wrote:
> Hi,
>
> On Fri, 9 Feb 2007, Heiko Carstens wrote:
>
> > And indeed all the __initdata annotated local and global variables on
> > s390 are in the init.data section. So I'm wondering what this patch
> > series is about. Or I must have missed something.
>
> I think it reaches back to times when gcc 2.7.* was still supported, which
> does behave as described in the documentation. gcc 2.95 and newer don't
> require explicit initialization anymore, so this has become a non-issue.
>
Yes, nobody's been observing any problems arising from this, and if this
memory was really uninitialised, people would be hitting problems.
I don't want to have to require that all __attribute__((section)) storage
be initialised - people will surely forget to do it and things will slip
through.
If we really do have a problem here it'd be better to fix it in some
central and global fashion: either by ensuring that each architecture's
startup code will zero this memory or by some compiler/linker option such
as -fno-common.
next prev parent reply other threads:[~2007-02-09 21:51 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200702091711.34441.alon.barlev@gmail.com>
2007-02-09 15:13 ` [PATCH 01/34] __initdata cleanup - alpha Alon Bar-Lev
2007-02-09 16:47 ` Jiri Slaby
2007-02-09 16:52 ` Alon Bar-Lev
2007-02-09 17:11 ` Jiri Slaby
2007-02-09 15:13 ` [PATCH 02/34] __initdata cleanup - arm Alon Bar-Lev
2007-02-09 15:14 ` [PATCH 03/34] __initdata cleanup - avr32 Alon Bar-Lev
2007-02-09 15:15 ` [PATCH 04/34] __initdata cleanup - frv Alon Bar-Lev
2007-02-09 15:15 ` [PATCH 05/34] __initdata cleanup - h8300 Alon Bar-Lev
2007-02-09 15:16 ` [PATCH 06/34] __initdata cleanup - i386 Alon Bar-Lev
2007-02-09 15:17 ` [PATCH 07/34] __initdata cleanup - ia64 Alon Bar-Lev
2007-02-09 15:18 ` [PATCH 08/34] __initdata cleanup - m32r Alon Bar-Lev
2007-02-09 15:19 ` [PATCH 09/34] __initdata cleanup - m68knommu Alon Bar-Lev
2007-02-09 15:19 ` [PATCH 10/34] __initdata cleanup - mips Alon Bar-Lev
2007-02-09 15:20 ` [PATCH 11/34] __initdata cleanup - parisc Alon Bar-Lev
2007-02-09 15:21 ` [PATCH 12/34] __initdata cleanup - powerpc Alon Bar-Lev
2007-02-09 15:21 ` [PATCH 13/34] __initdata cleanup - ppc Alon Bar-Lev
2007-02-09 15:22 ` [PATCH 14/34] __initdata cleanup - s390 Alon Bar-Lev
2007-02-09 15:22 ` [PATCH 15/34] __initdata cleanup - sh Alon Bar-Lev
2007-02-09 15:23 ` [PATCH 16/34] __initdata cleanup - sparc64 Alon Bar-Lev
2007-02-09 15:23 ` [PATCH 17/34] __initdata cleanup - v850 Alon Bar-Lev
2007-02-09 15:24 ` [PATCH 18/34] __initdata cleanup - x86_64 Alon Bar-Lev
2007-02-09 19:35 ` Andi Kleen
2007-02-09 19:45 ` Bernhard Walle
2007-02-09 15:24 ` [PATCH 19/34] __initdata cleanup - xtensa Alon Bar-Lev
2007-02-09 15:25 ` [PATCH 20/34] __initdata cleanup - acpi Alon Bar-Lev
2007-02-09 15:25 ` [PATCH 21/34] __initdata cleanup - aes Alon Bar-Lev
2007-02-09 15:26 ` [PATCH 22/34] __initdata cleanup - fs Alon Bar-Lev
2007-02-09 15:27 ` [PATCH 23/34] __initdata cleanup - ide Alon Bar-Lev
2007-02-09 15:28 ` [PATCH 24/34] __initdata cleanup - init Alon Bar-Lev
2007-02-09 15:30 ` [PATCH 25/34] __initdata cleanup - input Alon Bar-Lev
2007-02-09 15:31 ` [PATCH 26/34] __initdata cleanup - intel-rng Alon Bar-Lev
2007-02-09 15:31 ` [PATCH 27/34] __initdata cleanup - mm Alon Bar-Lev
2007-02-09 15:32 ` [PATCH 28/34] __initdata cleanup - mtd Alon Bar-Lev
2007-02-09 15:33 ` [PATCH 29/34] __initdata cleanup - net Alon Bar-Lev
2007-02-09 15:33 ` [PATCH 30/34] __initdata cleanup - parallel Alon Bar-Lev
2007-02-09 15:34 ` [PATCH 31/34] __initdata cleanup - pnp Alon Bar-Lev
2007-02-09 15:34 ` [PATCH 32/34] __initdata cleanup - scsi Alon Bar-Lev
2007-02-09 15:35 ` [PATCH 33/34] __initdata cleanup - serial Alon Bar-Lev
2007-02-09 15:35 ` [PATCH 34/34] __initdata cleanup - video Alon Bar-Lev
2007-02-09 17:00 ` [PATCH 00/34] __initdata cleanup Heiko Carstens
2007-02-09 17:25 ` Alon Bar-Lev
2007-02-09 17:37 ` Roman Zippel
2007-02-09 21:33 ` Andrew Morton [this message]
2007-02-09 21:48 ` Alon Bar-Lev
2007-02-09 22:11 ` Andrew Morton
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